Draft



T. B. FUNK. I DRAFT APPLIANCE F QR TRACTORS.

APPLICATION FILED JUNE 18 I920 1920.

I w. T 41. In E m 2 Reissued Nov. 16

T. B. FUNK.

DRAFTAP PLIANCE FOR T RACTORS. APPLICATION FILED JUNE 18,1920.

Reissud NOV. 16, 1920. v I I "14,9 85.

Z SHEETS-SHEET 2.

Invwfor: TTumanBFzcnk 61/2 in ass Thine-18, 19%.. Serial No. 390,025.

PATEN.

' 'rnunnn n." roux, or mourn, mums, nssmnonfro mourns. PLOW comrm, or;

OFFICE;

1 mm, ILLINOIS, A conronnrron on ILImoIs,

' DRAFT APPLIAHGE For. rnac'rons.

s ec fic tion otkeissued Letters Patent. -R d N6 1 0 Original application fi1e'd"li1ne; -23, 1915, Serial No. 35,784. I)iv-ided and'application filed May 3, 1916,,

1 Serial No. 95,091. originalnlib. 1,289,?24, dated December 31, 1915-. ApQIication for re1ssu e m d invented new and. useful Improvements in Draft Appliances for=Tractors, -of which the following isa. specification.

1 This inventionrelates to draft appliances ne rf se in connection with a tr tiv g 1 catgd of -s 'ped casting the'stem 13 ofithe fekind now being extensively used for plowing and otherv agricultural purposes. The object-of the invention is to so design -the draft appliances that they will fit a tractor 'forifinterchangeable use with plows ;or

' at a resisting the: torqueor the downward thrust other ground working-implements, and. so

equate provision will bemadefor of ,the rear endof the tractor, due to the operation of the engine, and so that the trail- 'ing implement may adapt itself by tilting. or rockingon ahorizontal axis to inequalities of thesurface' of the ground. j

A: further object of the invention is to .so

' I arrangethe, draftappliance that a low down draft-connectionbelowthe axis of'the' wheels will be afiorded, which better adapts the tractorfor use in connection with most of I the ground working implements for which it line of im-plementsis intended. Further objects are toso con 'struct the connections that they will be;

strong and durable, and at the same time well fi'ttedvfor,employment with -a diverse uses invention Furtherobj gects and I rom a detailed description of will appear the-invention which consists the features of construction and combinations of parts v hereinafterdescribed and claimed.

In the drawing-z v. Figure 1 is a sectional yiewthrough the tractor. showingthe draft 'appliance of the present invention inside-elevation; and Fig. 2 is a top or plan view of the same.

Thedraft featuresflr-onstituting the present invention are applied .to a tractor having tractor Wheels 1 driven bymeans of an engine2 and suitable gearing connections 3.

The-engine and associated parts, are carried v -fitted to receive the upper end of a draft bar by a frame 4, and are preferablymounted in advance of .theaxle 5', so that the weight of the engine will in aJneasure counter-balance the weightfof the draft appliances and assist the latter ,in' overcoming the torque of present invention;

the engine. The frame A, digits-rear end,-

terminates in a standard" 6. provided, at its he vertical yoke 11 constitutes the-bifurof-which projectsfto the rear and terminates in a depending arm- 14: provided, atits'end',

with a 3 horizontal pivot bearing" 15. The

,stem -l3 of'the'yoke ischanneled on each side, as shown, and receives the forward ends of a pair ofbeamslG one on each side of the stem 13, andthe beanis,-"at their rear ends, diverge-from one another, as shown in inhorizontal alinement with'the pivot bearing-15, the arrangement being one whichaffords a verystrong and rigid rearward co'n- "ne ctio'n for the draft appliances which particularlyform the subject matter of the Thepivot' bearings-15 and 18 "afford mountings for theforward and rear ends of a draft yoke 19, the ends ofvwhich are bifurc ated to embrace the pivot bearings 15 and 18; with which they"- are connected by means of horizontal pivots 20 and 21 respectively,-the arrangement being one which maintains the draft yoke in rigid vertical alinement withthe-beams 16 and which permits a sufficient degree of lateral,ortiltinn movement on a horizontal axis to compen-' sate for the rocking or oscillating motions of the trailing implement, due to inequalities in the surface of the ground.

The draft yoke 19, in its center,.is bolted or otherwise detachably connected with the tongue 22, pole, or other available front portion of a trailing implement, not shown, such as a plow, cultivator, harrow, or other device, with whichthe tractor is associated.

The yoke 11 is also channeled or otherwise '23, the lower end of which is provided with .a series of holes 24 any one .of which is top and bottom, with pivot mountings '1 and '8. respectively,-jwhich lattefreceive-the' upper. and lower ends Q'andQIOQIOI- a vertically arranged yoke 11,, being piv'oted 'to' "the"- mountings 7 and 8 by'ineans of-vertical pivot- 60' ins 12,- or other suitable pivotal appliancesi the tractor, enables it to be steered, and per-.

v 'm'lts it to be readily connected to avariety 1 .of devices. "Theefiective draft connection engine casing, or other available'portion of the tractor, so as to afford the draft bar suf, ficient resistance to withstand the pull and strain to which it is subjected. The beams 16, in conjunction with'the bridge plate 17 furnish a rear or articulated framework forthe tractor and serve as amounting for the'-' I draft beam and the trailing lmp'lements exc'ontrolling devices. 7

The arrangement is one which aflords a very rigid connection between the tractor andthe trailing implement, which is im' portant for the reason that the rear end of accommodating. the tilting .or tipping movechines, such ascultivators, hay rakes,

with.

the tractor will besupported upon the trailing implement at a considerable distance; from the tractor wheels, so that the 'connec-' 'tions must be of a character which will resist strains in a vertical directionand at the same time afford the horizontal tilting movement required in steering the tractor-and in ments of the "trailing implement in riding over rough ground. I

The draft yoke 19. is employed in connection withlow down machines, such as harrowsf for instance. but for high.draftmaetc. the yoke may be dispensed with and a connection made'directl-y between the tongue on pole of the machine and the horizontal pivot mountings 15 and 18. in which case the draft rod 25 will likewise be dispensed;

The advantagesof the inventionwill be obvious from an'inspection of the drawings; The tractor is a. compact-two-wheeled unit controlled byan operator seated preferablyon the device to be drawn. Between the operator and the power unit is a steering and coupling frame or reach that stabilizes may be high" or low depending upon the character of the device that is'drawn and it is arranged to secure ,movement about both a vertical and a horizontal axis so that theconnection is a flexible one'that permits the device that is drawn to adapt itself t o inequalities in-the surface of the ground, 'The controls for the tractor are carried-by'the; ,Qsteering or coupling frame .and swing withv it. They. are always in position tobe mm,

nipulated by an operator seatednear the rear of the couplingframe."

I claim:

1. Ina'machine of the characterdescribed, 'l

the combination, of a front power unit, in

terchangeable trailing implements, a draft -beam pivotally connected to the power unit" at its forward end on a-vertical axis to permit only lateral swinging motion, and a horizontal pivotal connectio'n between the draft beam and the trailing implements, the. draft beam extending over. the horizontal pivot. 2. In a machine of the character described, the combination of a front power unit, in terchangeable ,trailing implements, a draft beam'pivotally connected to the .powerunit 7 5 'atitsfront end on a vertical axis-to permit only lateral swinging. motion, and longitudinal pivotal connections between the rearwardly. extending draft beam pivotally connected therewith at its forward end on 5..

a vertical axis to.spermit lateral swinging motion, and a longitudinal pivotal connection carried by'the draft-beam and adapted 7 to pivotally connect, the latter with the underlying front portion 'of a trailing imple 9c ment, a draft bar .'downward ly extending from the draft beam, and a draft-rod rearwardly extending f therefrom and affording means for imparting draft to the trailing implement at a point below the longitudinal pivotal mounting therefor, substantially as described. 4. In a machine of thecharac'ter described,

power mechanism, a draft "beam pivotally "connected therewith to permit lateral swing;

ing motion, "a draft yoke pivoted to said draft beam on a horizontal axis, means for connecting atrailing implement to said draft yoke, a draft rod connectedwith said oke at a point below its pivot mounting, a epend- [ing draft barfitted for-adjustable connec--.

tion 'of. thedraft-rod, and a connection be-. tween the draft barand the forwardportion j of the-mechanism for impartin the draft there-through, substantially as described. I

5. In a machine ofthe character described, the combination of a front power unit, a rearwardly-extending draft beam pivotally connected therewith at its forward end on a 'ivertical axis to permit lateral swinging ;motion, and front and rear longitudinal'pivota'l'connections carried-by the draft beam and adapted to pivotally connect the latterj' "with the underlying frontpo'rtion of a trailing implement, a draft' bar downwardly e'xtending from the draftbeam, and a draft rod'rearwardlyextending therefrom and affording means for impartingdraft'tothe trailing implement at a oint below the lon I ing therefor, sub- 1 25 ;stantmlly as described. 3

gitudinal pivotal 6. In amachine of the character described, a wheeled-power mechanism, a draft beam s'wlvelly connected to said power mechanism by a vertical pivot, means for connecting an r implement to d beami consisting in part of a yoke pivdtally connected with said and saidayoke, and a connection from the power mechanism. to said draft bar "below the axial lineof said power mechanism, subg stantially as described.

.0. 7. In a machine of. the character described,

a wheeled power imechanism consisting in a part of a .-piv'ot st andard, a vertically dis-:-

'.fr'o'm, and-a bridge .plate connecting tlie rear posed yoke pivotedat' itsupper and lower ends to the pivot'standard and adapted, to .5 swing laterally,'a draft beam -i'igidly .con-i nected to. said-yoke and extendingrear wardly threfrom, sa.fldraft 'bai? dependin from said yoke, a dpr'ovidedZ-at its. lower endforadjustab e"connection, a'draft yoke 1 having its forward' and rear ends pivoted in horizontal. alinement below the'draft beam, means for det'achably connecting .a trailing implement 'to' said yoke, aldraft rod .having its, reangnd connected to; said yoke 1 fraud its forward; endadjustably"connected to the draft bar, andai connection between the draft bar and the powerfmechanism,-substantially as described. Y

81 ;In a in'achine" of the character .described, a wheeledrpower mechanism consisting in part of a pivotstandard, a vertically disposed yoke pivoted "at its upper and lower ends to'the pivot standard and adapted to swinglaterally and terminatingat its horizontal pivot mounting, a pair of draft beams rigidly-secured on opposite sides of mounting in alinement with thearm, a yoke having its forward and rear 'ends' pivoted to said pivot mountings, and a trailing implement connected. to saidi-yoke, substam.

tially as described. y 9. In a machine of thecharacter described, a wheeled'jfpfower mechanism consistingjn part of a pivot standard, a vertically disposed yoke pivoted at its upper and !,10W1 ends to the pivot standard and adapted to swing laterall'y'and terminating at its rear end in a depending arm furnishing a horizontal pivot mounting, a pair of draft beams rigidly secured on' opposite sides of the yoke and rearwardly extending therefrom, a bridge plate connecting the rear ends of said beams and provided with a pivot mounting in alinement with the mounting on the arm, a-yoke having its forward and rear ends pivoted to said pivot mountings, a trailing implement-connected to said yoke,

a draft bar depending from the vertically.

pivoted yoke, adraft .rod connecting said ar with the horizontally pivoted yoke, and

rear end in a dependingar-mfurnishing a ,lower ends to the pivot standard and adapt-F ed to swing laterally and'terminatingat its rear end infa depending arni furnishing a' horizontal pivot mounting, a pairj'of draft beams rig dly secured on opposite sides of the'yoke and -rearwardly extending there-' ends of said'bea'ins and provided with 'af" pivot mounting in alinement with'thef jsubstantially as described.

1 1,111 a machine pf the characterijdeei" "scribed, a" wheeled power mechanism con-f sisting in p'artof ayertical pivot standard,

a yoke vertically :pivoted' at upper ,lowerends to saidstandardand furnishing a rearwardly extending stem terminating in" a depending armffitted to receive -af'horizontal pivot, the stemfbeing ichanneled on'i its sides, a pair of draft beams having their forward ends fitted within said channels and rigidlywsecu ried to the stem of tliefy oke, bridge plate connecting therear' ends of ie beams and fittedtofuriiisha mounting for. a horizontal pivotv in alin'ement with the v pivot mounting afforded. by" the depending arm, and a" connection fora trailing'lii'nv plement pivoted to the. pivot. mountings last nenti'oned, substantially as. described scribed, the combination of a front power unit, van interchangeable trailing implement associated therewith, a. draft. beam having 12.. In a machine o f -the character des its forward end vertically pivotally connected to: the power unitat a point to the rear of the axial center of the. power unit to! permit the beam to have onlyl ateral swinging motion, and a horizontal pivotal cona nection between the draft beam and the as sociated trailing implement, the draft beani extending over the horizontal pivot.

,13. In amachine of the character de vscribed, the combination offa frontpower ,unit, an interchangeable trailing implement associated therewith, a draft beam having its forward endvertically pivotally connected to the power unit at a point to the rear of the axial center of the "power unit to permit B the tractor to a device to be drawn, said unit, including amember extending rearwardly 4 on a vertical ,axis to permit only lateral swinging motion, and a horizontal pivotal connection between the draft beam and the underl ing trailing implement.

15. n a machine of the character described,'the combination of a front power unit, an interchangeable trailing implement,

' a draft beam overlying the forward end of the trailing implement and pivotallyconnected to the power'unit at its forward end on a vertical axis to permit only lateral swinging motion, the pivotal point being to the rear of the axial center of the power unit, and a horizontal pivotal'connection between the draft beam and the underlying trailing implement.

16. A tractor havinga power plant, propulsion mechanism including two forward driving wheels, and a steering unit connected to the tractor to swing about a substantially vertical axis, said unit having mechanism associated therewith to provide a high connection to a high-draft device or I a low draft connection to a low draft device with the device free to swing in either case about a substantially longitudinal, horizontal axis relative to the tractor to adapt itself to inequalities in the surface-of the'ground. 17 A tractor having'a power plant, driving mechanism supported by two forward driving wheels, and coupling means for connecting the tractor to a wide variety of devices to be drawn, said means being connected to the tractor so as toextend rearwardly therefrom relatively high-above the ground to 'provide a high'connection to a high draft device and having-.mechanism associated therewith'to'provide a low conne'ction to a low draft device, the construction being such that the drawn device is free to swing in either case ab'outa substantially longitudinal, horizontal axis 4 relative to the tractor to permit it to adapt itself to inequalities in the surface of the ground,

tractor. adapted to be readily Iconnected to a wide variety of devices to be drawn, COIIlPllSiIl" a'power plant,.fdr 1'v1ng.

mechanism including two, forward drive wheels, and a coupling unit for connecting relatively high above thesurface on which the tractor is resting, control and steering mechanism supported-by said memberso as to be readily available for operation from a position on the device to be-drawn, said unit being constructed so that' the device to be drawnmay move relatively to the tractor about a substantially vertical axis and about I a substantially longitudinal, horizontal axis.

19. A. tractor having a power plant, dr-iving mechanism including two forward drive wheels, a rearwardly extending steering frame, means connected to' the steering frame so as to have a horizontal axis-of oscillation above the axisof the drive wheels to enable the tractor to be connected to a wide variety of devices and to permit the wheels, a yoke pivoted to the tractor to swing about a substantially-yertical axis for steeringpurposes, a beam connected to the yoke and extendingrearwardly, tractor controls and steering means supported by said beam, and draft connections associated with said beam for connecting the tractor to a device to' be drawn, said beam and connections being arranged-Ilse that the drawn device is free ,to' move relative to-the tractor. about a;

substantially longitudinal, horizontal axis.

21. A tractor having propulsion mecha-I nism including'two forward driving wheels, I

a rearwardly extending steering frame pivoted to the tractorto swing about a substan= tially vertical aids 'for steering purposes, and draft connections associated with the steering frame and extending downwardly to be connected with a device to be drawn and having horizontal, pivotal connection with the frame to permit tilting movement V of the devices drawn.

22. A tractor adapted to be connected to a wide variety of devices, comprising. a power plant, propulsion mechanism including two forward drive wheels, a coupling unit includingga yokepivoted, to the tractor by two separated pivots and having a rearwardly extending'portmn, a draft device extendlng downwardly from said unit and arbe drawn, the construction of the unit being such that the drawn device is free to move ranged to f it'the draft'to devices to y i about alongitudinal, horizontal axis relative i to the tractor.

. 23. A tractor-adapted 'tb' be connected to a wide vaflety of devices, comprising-apower plant, propulsion mechanism including two forward drive wheels, a coupling unit including a yokev pivoted to the tractor to swing about a substantially vertical axis,- a beam extending rearwardly from said yoke, and two separated pivotal connections carried bysaid' beam for attachmentto a device to be drawn. r

' 24, A tractor adapted to be connected 'a. .wide varietyof devices, comprising a to an implement:

- a .w d 'l-vat e y at d fib i power plant, propulsion -mechan1sm 11iclud,-,

:umtpiwt t' the-trade on su ant y p i. alt-pla t, prbnills on mech ism i lude mtlu n a 'yok r r ed t h firl to's bs'tantially vertical axis' L-.be 1n te dingyoke, steering connect...

beam and' the tractor, I I as and tractor control 'a r drby fi tamed airaim-l w n the r? e e .ij 'y' be 'era ks'car iedqbyfs d ngclJt rans i e -motion.

toi tml wa d .toh nnections carriedby.

for flexible attachment 'l-.1'A, tractor id to:

comprising a ing: twofforward drive wheels, .alcoupling'l' vertical axis-f to swing: in' a; horizontal plane relatively hig aboye. the 'ground, saidunit including ctio'nsf for a high. draft detion'to, a'low'draft device suchas aplow.

26. A twowheel tractor of the. unstable: type comprising ,3 pow'er. -.unit, driving meehanism',.coup1ing means pivoted to the a tractor to swing about a substantially ver-. tical axis for-steering purposes; said means including a rearwardly extending beam l ocated relatively high above? the-ground sothat, it maybe connected ma high draft im- 'plement such: as a. eorn cultivator, and. tree-- tor controls of a semi-rigid type extending-I. rearward from said tractor and arranged to swing relative theretoiland tobe-roadily available formanipulation from the normal positionof a'n'operat'or. on the-implement.

27. two wheel tractor :of the unstable. type .co1n prising .;a. poWerp-lantx driving' mechanism, couplingmeans-pivoted to the tractor. to swing. aboutia substantially vertical .axis fqr steering purposes, 'said means I for manipulationfrom the normal position of the operator on the implement.

including a: cated relatively rear-wardly extending beam lo high above the ground so that it may be connected to a high draft'im-= plement such as'a .corn cultivator and tracto'r' controls .and steering 'means supportedby said beam so as to be readily available.

28. A'two wheel tractor of theunstable type. adapted to be readily connected-to a wide variety of devices and having a power plant, propulsion mechanism, and

coupling means for stabilizing the tractor and for readily connecting it to various devices to be drawn, said'm'eans-being pivoted to the tractor to swing about a substantially vertical axis and including draft connections pivotedt'o said means to swing about a substantially longitudinal, horizontal axis.

ilIl'g awe-reward drive wheel's,- a coupling 1 tractor to: t 5 tiniplementytogprovi'de for' fs te ering,- and to loamy-the controls for the'ltractor sothat nd m an "thereof the arms elf-which are nected withthe' main tractor tractor two wheel tractor of. the iunstable Heha gJ- 'po er p ant, dr n nism, an a. coupling unit for connecting the itfthejdraft ;ol the, -st ractor. to such they n ay be nianipulatedg,from a position on the implement, said unit being .ivoted to the tractor axis; I for steering purposes and provided comiectio'nsto'an implement arranged E swingabout a. substantially lon mama-1,.- horizontal. f p eman .30; A

about a substantially. vertical.

axisto permittilting o such im ej bilia ng andlconnecting purposes pivoted .to the tractor .to': wing in a Thorizontal plan hav ng connections asspciatedtherewith-so that it Inayattadliedj to a; high draft device by a-high draft connection or, to alow: draft devic e..bya low. draft connection.

type having a main frame, couplingimeans .for; connecting the. tractor to -a device .to be. drawn comprising a yoke pivoted to the tractor to swing about a verticalaxis, a rear 'wardly extending beam carried by saidyoke pivot'ed to said beam 'tos'wing on a horizontallaxis and arranged, to be con n'ected-to thadeviceto be drawn. 32A two wheel tractor ofthe unstable ,typecomprising a main-frame, a connecting device including a 'rearwar'clly extending mem .er 3,- yokfi; f at one} end .pivotally frame, and a controlling unitfadjustably mounted on said .rearwardly, extending member including a steering gearand engine control connections.

33. A' two-wheel tractor of the. unstable type'havi'n-g a power plant, driving mechan1sm,a coupling frame pivoted tothetractor :various implements to be drawn 1 twodjwheel tractor of-the-unstable. ahavi p werfrl r r g h nism: and cOi pling meansJf r steering,.sta-' ss relatively high -above the; ground, said means a -90. wheelitractor of the unstable} 'to swing about a substantially vertical axis,-

to berdrawn and .a'rrangedto swing about. a vertical axis substantially coincident" with 'the axis of the coupling means, and, acon necting' device pivoted to the couplingframe on a longitudinal,horizontal axis;

84,-. The combination with a two wheel tractor of-the unstable type, of an unstable implement and means forconnecting the tractor. and implement to combine. the two into 'a stabilized unit, said means including a steering frame pivoted to the tractor to swing about a vertical axis in a plane relatively high above the ground and means associatedwith the frame for connection to the implement arranged to transmit the draft to the implement by a relatively low draft concontrols extending rearwardlyfrom a the tractor for manipulation from a. device.

nection and at the same time permit the ll Ilplement to move relative to the tractor about a substantially, longitudinal, horizontal axis so that the implement mayadapt itself to inequalities "inthe surface ofthe ground Without straining the connection with the tractor.

:35. A two wheel tractor'of the unstable type having drive Wheels, a pq'wer. plant' mounted forward of the drive"}'-wh'eels, a. coupling unit positioned to the' rear of the drive wheels and counterbalanced by the power plant,'said coupling unit being piv-- oted to the tractor to swlng about a sub stantially-vertical axis for steering purposes and being arranged to .be'conn'ected to e ther a high or low draft device with the connection free to swing about a substantially longitudinal, horizontal axis and' control and steering means carried by the coupling unit and arranged to swing therewith so as to be.

readily available for operation from a p0si-.

' tion near the rear ot-the coupling unit.-

. rear of the axis of the drive .wheels so as i 36. A two wheel tractor having drive wheels, a power plant-mounted forward of the axis of the drive wheels, couplingmeans connected .to the tractor positioned to the.

-to be counter-balanced by the power plant located, relatively high above the ground so- .turb the controls,,and draft connections ass'ociated with said coupling'unit' for -connect-' ing it tothe device that is drawn so. as to --of said coupling means;

and arranged to be readily connected to va rious devices to be drawn fEorstabilizing steering and controlling the tractor, and control and steering connections carried by the coupling e means -soasto be always readily zfor manipulation near the rear availab 37. A two wheel tractor of the unstable type having a power plant, drlvlng mechanlsm, and acoupling and steering unit for connecting the tractor to a device to be drawn to combine it with'the tractor into a stabilized unit, said coupling unit being pivoted 'to the tractor to swing about a substantially vertical axis for steer ng purposes and having rearwardly extending portions that the-unit can be coupled to a highdraft device such as a corn cultivator, steering connections, between theunlt andgtractor,

steering control means and tractor controls carried by then-nit and available for manipulation from a position on. the device that is drawn, said tractor controls be1ng ar ranged to extend' forward to the tractor past the pivotof-the eoupling unit 'ofthe tractor so that movements of the'unlt wlll not d1s permit the device tomove relative to the tractor about a substantially longitudinal,

horizontal axis; 4 l

38. A two wheel tractor of the unstable type comprising a power plant, driving mechanism, couplingmeans pivoted to the tractor to swing. about a substantially vertical axis for steering purposes, mechanism for connecting'said means to an implement so as to permit the implement to move relative 1to thetractor about a substantially; 'long tudlnal, horizontal" axis, and tractor readily available for manipulation from the normal position of an operator on the device that is drawn. y U '39. A tractor of the unstable type having a power plant, propulsion mechanism supported by'two forward. drivezwheels, a coupling frame for connecting the tractor .to a variety of devices to be drawn to "stabilize the tractor, and separate 5 connectlng mechanism for transmitting the draft of the tractor to thedrawn device.

40. A tractor of the unstabletype hav ing apower plant, propulsion. mechanism' supported by two forw'ard drive wheels,'a coupling framejfor connecting the tractor to a variety of devices to be drawn to stabilize the tractor, separate connecting ymechanism' for transmitting the draft of the tractor to the drawn device, and means for steering and for controlling the tractor from the drawn device.

.411. Atractorof the unstable ng a power plant, propulsion mechanism supported by two forward drive wheels,-

coupling means for connecting thetractor type hav V v ing mechanism for transmitting "the draft" of the tractor to a drawn device, said means and mechanismbelng arran' ed so that the 'draW-n'device is free to tilt a out a longitudina'l; horizontal axis relative to the tractor. 42. 'A tractor of the unstable type having a power plant, propulsion mechamsm' supportedby two forward drive wheels, c'oupling means for connecting the tract or to 'a variety of devices-to be draw'n'to stabilize the tractor, means for loosel'y'connecting the rear end of the coupling means toa drawn device, and separate mechanism for transmitting the draftoi the'tractor to the drawn 'TRUMAN B. FUNK.-

to a .varietyof devices to be drawn to] stabilize the tractor, and separate. connect- 

